Is CVE-2020-28578 actively exploited?

No active exploitation of CVE-2020-28578 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-28578 be exploited remotely?

Yes. CVE-2020-28578 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-28578?

CVE-2020-28578 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2020-28578

CWE-787Published: November 18, 2020· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A vulnerability in Trend Micro InterScan Web Security Virtual Appliance 6.5 SP2 could allow an unauthenticated, remote attacker to send a specially crafted HTTP message and achieve remote code execution with elevated privileges.

NVD Source

Technical Analysis

CVE-2020-28578 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-787): Out-of-bounds write vulnerabilities can lead to data corruption, crashes, or arbitrary code execution.